Android :: Adding Child View At Particular Location In Parent View

Mar 20, 2010

I need to draw a child view containing a rectangle and button on top of the content view at particular location on the parent (content view). How can I do this? Did not find an explicit way to set origin of child view?

Android :: Adding child view at particular location in parent view


Android :: Populate View Flipper Child View With List View?

Aug 2, 2010

I am trying to set up a ViewFlipper that changes a SlidingDrawers content each time a button is pressed. So far every view I set up worked fine, but now I am trying to create a ListView (including single_choice_mode) within a child view of the ViewFlipper, but my attempt only let to a NullPointerException. As I only discovered ViewFlipper today, I am not yet familiar with it and may not have understood it completely. if someone could give me a hand and help me find out what I have done wrong, that would be great. Here is what I have done:

The code for the onClick event of the ImageButtons:
public void onClick(View v){
if (v == btnExposure){
mFlipper.setDisplayedChild(0); }
else if (v == btnProperties){
mFlipper.setDisplayedChild(1);}
else if (v == btnSpecialEffects){
mFlipper.setDisplayedChild(2);.............

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Android :: Scroll View Doesn't Resize - Content Of Child View Changes

Aug 18, 2010

I have a WebView inside the ScrollView. The content of WebView dyanamically changes when it displays different html page. I have the following issue: For example I have A.html, and B.html. The content of B.html is larger than A.html, so the page is longer. When WebView load B.html, the ScrollView stretches its size to enable itself scroll for B.html, then if I go back to A.html, ScrollView doesn't resize itself. (The scroll area is exceed the content of A.html) What I want to have, is dynamic change the scroll area of scroll view to fit the webview's content.

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Android :: Inflater Brings Back Child Of View Instead Of View Itself?

Sep 30, 2009

something weird is happening when i inflate a particular view and i wonder whether i'm running into some kind of namespace collision inside the resource/class space.i have a few custom views in my app and generally i park them in discrete XML files. the views are declared.

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Android :: List View Focus - Child View As Background

Jun 25, 2010

In my app i'm setting background to each child views in listview. So that listview default focus ( orange color ) is not focusing. Is there any way to set both ( listview focus & child view background)?

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Android :: Position Of Child View In Horizontal Scroll View

May 18, 2010

I have a HorizontalScrollView with a series of CompoundButtons. I want to find the (x,y) for a given child view. I have tried using:

getLocationOnScreen()
getLocalVisibleRect()
getChildVisibleRect()
like this:
View tmpView = this.findViewById(viewId);
Rect hitRect = new Rect();
tmpView.getLocalVisibleRect(hitRect);
the hitRect is always 0,0 - 0,0.

I need the x,y mainly to scroll to a particular child view. Any help is greatly appreciated.

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Android :: List View Fixed Height Of Child View

Jul 27, 2010

Please advice how to set fixed heigh (in dip) for the child view of ListView component? I am using relative layout as root layout for the child view when I set backgoround image to relative layout it becomes very height (maybe because backgoround picture is large) and I want to set precisely the height in dp.

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Android :: Populating View Flipper Child View

Aug 2, 2010

I am trying to populate a ViewFlipper with a ListView when a certain button is clicked...but I only get a NullPointerException for lv.setAdapter(new ArrayAdapter<String>(this, R.layout.specialeffectsview, specialEffects)); To be honest I don't really know how to do this, I just learned about the ViewFlipper today and I haven't fully understood how to use it yet. If anyone could help me find how what I have done wrong, that would be great.

Here is the code I use:
public void onClick(View v){ if (v == btnExposure){
mFlipper.setDisplayedChild(0);
else if (v == btnProperties){ mFlipper.setDisplayedChild(1); }
else if (v == btnSpecialEffects){ mFlipper.setDisplayedChild(2); String[] specialEffects = getResources().getStringArray(R.array.special_effects_array); lv.setAdapter(new ArrayAdapter<String>(this, R.layout.specialeffectsview, specialEffects)); lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE); }

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Android :: Adding View To Bottom Of Layout Inside Scroll View

Mar 10, 2010

So my layout looks basically like this:
<ScrollView>
<RelativeLayout>
<BunchOfViews/>
<ImageView android:layout_alignParentBottom="true"/>
</RelativeLayout>
</ScrollView>
I have the ScrollView so all of the layout always is visible no matter the height of the screen. The problem is that on a very high screen, I still want my imageview to be at the bottom. However, a child of a ScrollView dont seem to have a defined bottom. The View is placed at the top of the layout. How can I solve this problem in a neat way?

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Android :: Views And Their Child Views - How To Avoid The Ugly - Boxes - When Child Views In A View Has Another Color Than Background

Jan 6, 2010

I have a simple ListView and on that ListView I have placed a number of custom defined Views. The CustomView has ImageView and two TextViews.

The CustomView also has a "stateful drawable" as background, so that the background image (a 9-patch) changes if you press the Row in the ListView. When pressing the Row, the background image changes to a Red-ish thing.

The problem is that when the background changes from the default greyish, all the Views in the CustomView (ImageView and TextViews) still have their greyish background and thus creates very ugly greay boxes on top of the now redish background.

What is the best way to solve that problem? I hoped that such things were handled automatically (as it is done in for example .NET), but I was wrong it seems.

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Android :: Gallery Child View

Apr 13, 2009

I have created a child class from the Gallery view, named MyGallery. I did this because I wanted to get rid of the onFling event in the gallery view. Having that achieved, it lead me to a different problem. Scrolling the Gallery with the Dpad doesn't work now. When I tried using the original Gallery class, the dpad works fine. But when I extend the Gallery and use my custom gallery class, the dpad stops working. Am I missing something?

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Android :: Set Z Order To Child View?

Mar 4, 2010

I want to set the Z order to the view(Relative layout view). My main Layout is Absolute Layout and inside that i am using child views(each view is on Relative layout) .Inside Main Layout ,i have 5 sub Layouts ,(5 child views)by changing the x position.and i am giving the x positions like ,all the child's will overlap some part of the view(25%)with the next view. Now what i want to do is ,i want to set one view always should be on the top of the the next view. Is there any way to set Z order of the view so that it will be on the top of another view or on below of the another view .I need to change the Z order. If any body knows pls give me any idea.

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Android :: Find Non Child View?

Aug 8, 2010

I have a TextView inside the same RelativeLayout as a chunk of ImageView derived custom classes. I'd like to be able to write to the TextView from inside these other Views. How do I do this since I am unable to use findViewById due to it not being a child?

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Android :: Size A View Based On Its Parent's Dimensions?

Jan 29, 2010

How can I size a view based on the size of its parent layout. For example I have a relativelayout that fills the full screen, and I want a child view, say an imageview, to take up the whole height, and 1/2 the width? I've tried overriding all on onMeasu onLayout onSizeChanged etc and I couldn't get it working....

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Android :: Back To Parent View When Press On Escape

Dec 29, 2009

I am using ViewFlipper for my application. I trying to make it.when user pressed on escape (back) button, it would be back to parent Layout.

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Android :: Detect If View's Parent Activity Is Being Destroyed?

Jun 30, 2010

I want to do some cleanup in a view when the activity is being destroyed. Is there any way to get a callback in the View when the activity is being destroyed? I tried using onDetachedFromWindow, but I'm not sure whether it is correct thing to do.

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Android :: Detect If A View's Parent Activity Is Paused

Jun 20, 2010

In one of my Activities I have a ListView that displays a list of locations. For each list item I want a little arrow icon that points in the direction of the corresponding location. I implemented this icon by extending ImageView. This custom View has a listener that reacts to changes of the device's orientation by rotating the icon image accordingly. I register the listener in the onAttachedToWindow() method and unregister it in onDetachedFromWindow(). This kind of works but the problem is that onDetachedFromWindow() sometimes gets called only a long time after the containing Activity has paused. Also, the whole layout overall seems a little hacky. So my question is: Is there a proper way to unregister the listeners or would you implement this in a completely different way to begin with?

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Android :: How To Access An Element Present In Parent View

Oct 20, 2010

Full code. how do i access the parent activity's mail layout elements? In this case a button. I have it declared in main.xml. When a button in the listview is clicked, i want to change the text of the button in main.

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Android :: Add Child Views To Main View

Oct 23, 2010

I am trying to figure out how to add a child view to a parent view so I can use the MotionEvent.ACTION_MOVE feature to move from one child view to the next. Is this possible?

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Android : Want To Share Same View.m Tag Value / ViewGroup To Child

Nov 16, 2009

I want to share the same view.mTag value of a viewgroup to all the childs under that viewgroup.

Like all childs should call the getTag() of viewgroup to get the tag .How can i do that ?

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Android :: How Do I Center A Grid View In Its Linear Layout Parent?

Oct 9, 2009

GridView is not behaving like it is supposed to.
This screenshot shows that the GridView (in landscape mode) is flushed left.
I want it centered. This is the XML layout for the GridView.
<Linear Layout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/templatelandscape"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<GridView
android:id="@+id/commandsbarlandscape"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:layout_alignParentTop="true"
android:layout_centerInParent="true"
android:padding="0dp"
android:verticalSpacing="2dp"
android:horizontalSpacing="2dp"
android:numColumns="auto_fit"
android:columnWidth="52dp"
android:stretchMode="spacingWidth"
android:gravity="fill_horizontal">

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Android :: Place Focus In Child View Of List Row?

Mar 12, 2009

I have ListView, where each row contains two edittext boxes. I'd like on list item selected(using Dpad) place focus on first edittext box. I tried the following code, but it does not work: ListView list = (ListView) findViewById(R.id.list); OnItemClickListener click_listener = new OnItemClickListener() {public void onItemClick(AdapterView<?> parent, View view, int position, long id){EditText box1= (EditText ) view.findViewById(R.id.box1); box1.requestFocus(); return ;} list.setOnItemClickListener(click_listener);}

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Android :: Background Hides Child View Text?

Aug 1, 2010

I have a simple LinearLayout. When I add the android:background to the LinearLayout, the TextView is no longer visible. What am I not understanding?

<LinearLayout
android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="53px"
android:background="@drawable/glossy_black_top_bar" >
<TextView android:text="This is the Title"
android:id="@+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:textColor="#FFFFFF">
</TextView>
</LinearLayout>

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Detecting ID Of Child View In LinearLayout

Jan 2, 2012

how to detect the object I've clicked on within a LinearLayout which itself is a child window within a gridview. I've tried a few methods which I thought would work but none of them work. Within the gridview I can detect the correct child window (which in this case is the Linear Layout) but I cannot figure out how to detect the object within the LinearLayout itself.

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Android :: Programmatically Control Size Of Child View In AbsoluteLayout

Feb 18, 2009

The documentation at http://code.google.com/android/reference/android/widget/AbsoluteLayout.html says:
onLayout(boolean changed, int l, int t, int r, int b) //Called from layout when this view should assign a size and position to each of its children. So I overrode it like this:

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
Log.d("test", "In MainLayout.onLayout");
int childCount = getChildCount();
for (int childIndex = 0; childIndex < childCount; childIndex++) {
getChildAt(childIndex).setLayoutParams(new LayoutParams(100, 100, 100, 100));
}
super.onLayout(changed, l, t, r, b);
}

I am declaring the child elements (buttons) in the XML for the layout. This correctly sets the position of the buttons but not the size. The size is being taken from what is defined in the XML (it's a required attribute).

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Android :: Access Child Items In Image Gallery View?

Sep 10, 2010

I want to auto select an image in gallery and focus the selected image. I know the position (index) of the image in gallery. I am trying to use in res/layout/main.xml

<Gallery
android:id="@+id/galleryView"
android:layout_below="@id/imageViewMap"
android:layout_width="fill_parent"
android:layout_height="100sp"
android:layout_weight="1" />
in AlbumView.java
gallery = (Gallery) mView.findViewById(R.id.galleryView);
ImageView view = gallery.getItemAtPosition(position);

Unfortunately the above code is returning null. Can you please help in this matter.

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Android :: Gallery / Adapter View Child Draw Able State

Oct 4, 2010

I am using a Gallery view where the view corresponding to each item is non-trivial and consists of text as well as multiple buttons. When I click to drag the gallery view (somewhere not on one of the buttons) the button's drawable state changes to pressed and appears as if all of the buttons are currently being pressed. Additionally, the same behavior happens for the selected state (e.g. all of the text of the child TextViews changes color). I am trying to prevent this behavior and have found the android:duplicateParentState xml attribute as well as the setDuplicateParentStateEnabled property. This seems like it should accomplish what I am trying to do, but it seems to have no effect.

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Android :: View Stops Receiving Touch Events When Parent Scrolls / Continue It?

Sep 8, 2010

I have a custom Android view which overrides onTouchEvent(MotionEvent) to handle horizontal scrolling of content within the view. However, when the ScrollView in which this is contained scrolls vertically, the custom view stops receiving touch events. Ideally what I want is for the custom view to continue receiving events so it can handle its own horizontal scrolling, while the containing view hierarchy deals with vertical scrolling.

Is there any way to continue receiving those motion events on scroll? If not, is there any other way to get the touch events I need?

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Gridview Child View Removal / Replacement

Dec 21, 2011

I'm currently working on an app that has a number of views within a Gridview (Imageviews, Textviews and Linearlayout). Upon clicking the mouse button I would like to replace the existing views with new views. Where I currently have an imageview for example could be replaced with a TextView.

I have tried various calls which suggest they delete these objects and the code does compile but then when I run it it crashes.

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Android :: Why Doesn't Fillparent Work For A Child View Group Inside ScrollView

Aug 11, 2010

I want the view group to extend with the ScrollView if the content of the group is smaller than the display area of the ScrollView.

How can I have the ScrollView child extend to fill the parent if it's smaller than the parent?

CODE:.........................

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